After years of continued research and development on arachidonic acid (ARA), Molecular Nutrition has launched the next big innovation in muscle-building supplementation. X-Factor Advanced combines the patented protein synthesizing power of arachidonic acid, with a precise synergistic blend of ingredients designed to enhance its absorption, utilization, and overall effectiveness. X-Factor Advanced takes the power of X-Factor to a whole new level! It took more than 6 years of research and experimentation, but Molecular Nutrition has finally returned to once again set a new standard. X-Factor Advanced – an enhanced version of the original anabolic masterpiece!